Home / 90,960.80-136,455.77-38,378.03

Finding the Fourth Proportional to 90,960.80, 136,455.77 and 38,378.03

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Solution

The fourth proportional to 90,960.80, 136,455.77 and 38,378.03 is: 57,573.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,960.80 : 136,455.77 = 38,378.03 : x
  2. Step 2: Convert to fraction form
    90,960.80/136,455.77 = 38,378.03/x
  3. Step 3: Cross multiply
    90,960.80x = 136,455.77 × 38,378.03
  4. Step 4: Simplify right side
    90,960.80x = 5,236,903,048.40
  5. Step 5: Solve for x
    x = 5,236,903,048.40/90,960.80
  6. Step 6: Final answer
    x = 57,573.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.